US10468899B2 - Battery charger system and method - Google Patents
Battery charger system and method Download PDFInfo
- Publication number
- US10468899B2 US10468899B2 US15/936,867 US201815936867A US10468899B2 US 10468899 B2 US10468899 B2 US 10468899B2 US 201815936867 A US201815936867 A US 201815936867A US 10468899 B2 US10468899 B2 US 10468899B2
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- Prior art keywords
- battery
- computing device
- charger
- mobile computing
- potential difference
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000036541 health Effects 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims description 27
- 230000004044 response Effects 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000233031 Amblyomma tuberculatum Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/005—Detection of state of health [SOH]
-
- H02J7/0077—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- H02J2007/005—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
Definitions
- the present invention relates generally to a system for charging a battery and a method of monitoring the state of health of a battery and finds particular, although not exclusive, utility with 12V DC car batteries.
- Battery state of health is a term used to describe the amount by which a battery has degraded since manufacture, and in particular is a measure of the total capacity of the battery relative to its original total capacity.
- Various ways of determining battery state of health are known that do not require a battery to be fully charged and then discharged through a known load. However, these methods are not easily conducted in remote environments where equipment and high-speed data access are limited. It can be dangerous to attempt to charge an unhealthy battery, and conventional battery testing equipment is both bulky and costly.
- a battery charger system configured to monitor the state of health of a battery
- the battery charger system comprising: a charger device configured to be connectable to a battery, the charger device having a power source, and the charger device comprising: a microcontroller configured to control operation of the charger device; a DC power supply for supplying direct current to a battery connected to the charger device; at least one voltmeter for determining a potential difference between two terminals; an AC power supply for supplying alternating current to the battery connected to the charger device; and a transceiver for transmitting data signals from the charger device and receiving instruction signals at the charger device; a mobile computing device connected to the charger device, the mobile computing device configured to receive the data signals from the charger device and transmit instruction signals to the charger device, the mobile computing device further configured to communicate over a mobile telecommunication system; and a remote computing device configured to communicate with the mobile computing device over the mobile telecommunication system; wherein the battery charger system is configured to: supply alternating current to the battery with
- a battery may be tested before charging to ensure that it is safe to charge.
- the state of health of the battery may be determined by either the mobile computing device or the remote computing device; however, whichever makes that determination, the remote computing device is required to give permission for the charger device to charge the battery (relayed via the mobile computing device).
- the mobile computing device makes the determination, the results of that determination are passed to the remote computing device; alternatively, the data signal may be forwarded (in whole or in part) to the remote computing device for determination there.
- An indication of the battery state of health may be presented to a user, for instance on the mobile computing device.
- the instruction communication may comprise the indication of the battery state of health.
- the indication may comprise a colour (e.g. red, amber or green), a number (e.g. a percentage), picture (e.g. tick, cross, smile, frown), word, or any other means of conveying information relating to the state of charge.
- a user may be able to track declining state of health, and arrange for a replacement battery to be sourced prior to failure of the battery under test.
- the battery connected to the charger device may be a battery under test, and/or a battery for charging.
- the power source may comprise a mains electricity connection, an electrical generator and/or a power source battery.
- the power source battery may comprise the battery under test.
- the DC power supply may be configured to charge the battery under test.
- the DC power supply may be separate from the power source, or may be fed from the power source.
- the DC power supply may comprise an AC-DC converter, for example to convert mains electricity to DC current.
- the DC power supply may comprise the power source battery, and/or be supplied by the power source battery.
- the at least one voltmeter may comprise a single voltmeter, at least one voltmeter, two or more voltmeters, only two voltmeters, or any other appropriate number of voltmeters.
- the at least one voltmeter may comprise an analogue-to-digital convertor, for instance in an integrated circuit, from which the charge device can digitally read a detected voltage.
- the two terminals may be fixed, that is to say, the at least one voltmeter may be configured to determine a potential difference between only two specific terminals.
- the two terminals may be selected by the microcontroller from a plurality of terminals.
- the charger device may be removably connectable to each of a plurality of batteries.
- the charger device, mobile computing device and/or remote computing device may be configured to record data relating to each of a plurality of batteries, such that a change in battery state of health can be recorded for the plurality of batteries over time.
- the charger device, mobile computing device and/or remote computing device may be configured to identify each of a plurality of batteries automatically; alternatively, user input may be required to identify each battery.
- the at least one voltmeter may be arranged to determine a potential difference between the terminals of the battery.
- the at least one voltmeter may be arranged to determine a potential difference across a load connected to one and/or both terminals of the battery.
- the at least one voltmeter may be configured to determine a static, average and/or DC voltage.
- the at least one voltmeter may be configured to determine an alternating voltage, in particular the peak, peak-to-peak, RMS voltage, and/or to record a trace of the voltage over at least one cycle (and/or an determine an average cycle).
- the voltmeter may be further configured to determine frequency and/or phase of the alternating voltage, for instance, the voltmeter may determine a phase relative to some predetermined time signal or relative to the phase of the alternating current.
- the AC power supply may comprise a DC-AC converter, an oscillator, or some other device for producing an AC signal.
- the AC current may comprise current having a frequency within a predetermined range, for instance at audio frequencies, between 10 to 30,000 Hz, in particular between 20 to 20,000 Hz, more particularly between 50 and 10,000 Hz.
- the AC power supply may be configured to supply alternating current at more than one frequency.
- the AC power supply may supply alternating current varying in frequency over a range of frequencies. In this way, the response of the battery to different frequencies can be used in determining the state of health of the battery.
- the transceiver may be configured to transmitting data signals from the charger device and receiving instruction signals at the charger device wirelessly (e.g. WiFi, Near Field Communication and/or Bluetooth (®)) and/or over a wired connection (e.g. USB or similar).
- wirelessly e.g. WiFi, Near Field Communication and/or Bluetooth (®)
- wired connection e.g. USB or similar
- Communication over a mobile telecommunication system may comprise 2G/second generation wireless mobile telecommunications technology, 3G/third generation wireless mobile telecommunications technology, 4G/fourth generation wireless mobile telecommunications technology, other forms of wireless mobile telecommunications technology and/or SMS/Short-Messaging-Service.
- the remote computing device may comprise a server and/or desktop computer, and may be configured to communicate with the mobile computing device over the mobile telecommunication system via the internet.
- the remote computing device and/or the mobile device may be configured to determine an impedance of the battery.
- the state of health of the battery may be determined by comparing a measured impedance of the battery to a previously measured impedance of the battery; that is, a decrease in the measured impedance of a battery indicates a degradation in the state of health thereof.
- the remote computing device and/or the mobile device may store data relating to the battery under test, such that comparisons may be made with earlier tests.
- the remote computing device may send a signal to the mobile device indicating that the battery should not be recharged and/or should be replaced. If the state of health of the battery is determined to be above some further predetermined threshold (which may be the same as the first predetermined threshold) then the remote computing device may send a signal to the mobile device indicating that the battery is safe to recharge, or that the battery may be recharged.
- the charger device may be configured to await user input before charging, for instance by receiving a confirmation signal from a user interface device, either as part of the charger device or the mobile computer device.
- a method of monitoring the state of health of a battery comprising: providing the battery charger system of the first aspect; supplying alternating current to the battery with the AC power supply; determining a potential difference between two terminals due to the supplied alternating current with the at least one voltmeter; transmitting a data signal indicative of the potential difference determined by the at least one voltmeter to the mobile computing device from the charger device; sending a communication based on the data signal indicative of the potential difference determined by the at least one voltmeter to the remote computing device from the mobile computing device over the mobile telecommunication system, in response to the mobile computing device receiving the data signal; determining a state of health of the battery at the mobile computing device from the data signal indicative of the potential difference, or at the remote computing device from the communication based on the data signal indicative of the potential difference; sending an instruction communication to the mobile computing device from the remote computing device over the mobile telecommunication system, in response to determining the state of health of the battery and receiving the communication; transmitting an instruction signal
- the invention may include a computer processor configured to execute computer program code for carrying out at least one step in the method of the second aspect.
- FIG. 1 is a representation of a battery charging system.
- FIG. 2 is a circuit diagram demonstrating the different modes of operation of a charger device.
- FIG. 3 is a circuit diagram showing one possible arrangement of components within the charger device.
- first, second, third and the like in the description and in the claims are used for distinguishing between similar elements and not necessarily for describing a sequence, either temporally, spatially, in ranking or in any other manner. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that operation is capable in other sequences than described or illustrated herein.
- top, bottom, over, under and the like in the description and the claims are used for descriptive purposes and not necessarily for describing relative positions. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that operation is capable in other orientations than described or illustrated herein.
- a device A connected to a device B should not be limited to devices or systems wherein an output of device A is directly connected to an input of device B. It means that there exists a path between an output of A and an input of B which may be a path including other devices or means.
- Connected may mean that two or more elements are either in direct physical or electrical contact, or that two or more elements are not in direct contact with each other but yet still co-operate or interact with each other. For instance, wireless connectivity is contemplated.
- FIG. 1 is a representation of a battery charging system comprising a battery 1 to be charged, connected by electrical wires 3 to a charger device 5 .
- the charger device 5 is capable of wireless communication 7 with a mobile device 9 , such as a smartphone, tablet, phablet, laptop, etc. In alternative arrangements the communication 7 may be wired, rather than wireless.
- the mobile device 9 is configured to communicate over the wireless telecommunication network 11 , and thence via the internet 13 to a network-enabled 15 remote computer 17 .
- the charger device 5 is configured to carry out the charging and testing operations; however, intensive data processing may be carried out by the remote computer 17 , which may include processing of data relating to multiple batteries which may have been relayed by a plurality of mobile computing devices. Communication between the charger device 5 and the remote computer 17 is mediated by the mobile device 9 , which may communicate either wired or wirelessly (e.g. WiFi, Blue Tooth (®) or Near Field Communication) 7 with the charger device 5 and wirelessly 11 with the internet 13 .
- the mobile device 9 may communicate either wired or wirelessly (e.g. WiFi, Blue Tooth (®) or Near Field Communication) 7 with the charger device 5 and wirelessly 11 with the internet 13 .
- FIG. 2 is a circuit diagram demonstrating the different modes of operation of a charger device.
- the left diagram shows positive (+) and ( ⁇ ) terminals arranged to charge the battery 1 .
- the middle diagram shows a first voltmeter V 1 arranged to measure the voltage across the battery 1 .
- the right diagram shows an alternating current being applied through the battery 1 in series with a resistor 19 ; a second voltmeter V 2 measures the voltage over the resistor 19 .
- the impedance of the battery can be calculated from the measured voltage amplitude and phase relationship to the applied alternating current.
- FIG. 3 is a circuit diagram showing one possible arrangement of components within the charger device in which a single voltmeter V is used.
- the voltage of the battery can be determined by the voltmeter V.
- relays may be used in place of the switches referred to above.
Abstract
Description
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1718096.9A GB2568461B (en) | 2017-11-01 | 2017-11-01 | A Battery charger system and method |
GBGB1718096.9 | 2017-11-01 |
Publications (2)
Publication Number | Publication Date |
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US20190131796A1 US20190131796A1 (en) | 2019-05-02 |
US10468899B2 true US10468899B2 (en) | 2019-11-05 |
Family
ID=60580174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/936,867 Active US10468899B2 (en) | 2017-11-01 | 2018-03-27 | Battery charger system and method |
Country Status (3)
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US (1) | US10468899B2 (en) |
GB (1) | GB2568461B (en) |
WO (1) | WO2019086827A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US6229285B1 (en) * | 1997-10-03 | 2001-05-08 | Georgia Tech Research Corporation | Detector for rapid charging and method |
US6424157B1 (en) * | 1998-07-20 | 2002-07-23 | Alliedsignal, Inc. | System and method for monitoring a vehicle battery |
US6653817B2 (en) * | 2001-06-26 | 2003-11-25 | General Motors Corporation | State-of-charge detection device for a battery |
US20060091863A1 (en) * | 2004-04-06 | 2006-05-04 | Cobasys, Llc | Battery state of charge voltage hysteresis estimator |
US20070216367A1 (en) * | 2006-03-14 | 2007-09-20 | National University Of Ireland, Galway | Method and device for determining characteristics of an unknown battery |
US20140247004A1 (en) * | 2013-03-01 | 2014-09-04 | Nokia Corporation | Method, apparatus, and computer program product for foreign object detection parameter and charging data communication with wireless charging capable battery pack |
Family Cites Families (8)
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US7567085B2 (en) * | 2003-04-23 | 2009-07-28 | Powertron Eng'g Co., Ltd. | Diagnosis for expected life of emergency power apparatus |
US7554294B2 (en) * | 2005-01-28 | 2009-06-30 | The Johns Hopkins University | Battery health monitor |
US7970585B2 (en) * | 2007-06-29 | 2011-06-28 | Hewlett-Packard Development Company, L.P. | Method and system for remote monitoring and control of wireless cell-sites |
US7928735B2 (en) * | 2007-07-23 | 2011-04-19 | Yung-Sheng Huang | Battery performance monitor |
JP5043777B2 (en) * | 2007-08-22 | 2012-10-10 | パナソニック株式会社 | Non-aqueous electrolyte secondary battery charging method |
US9177466B2 (en) * | 2011-01-20 | 2015-11-03 | Indiana University Research And Technology Corporation | Advanced battery early warning and monitoring system |
US9459323B2 (en) * | 2011-11-08 | 2016-10-04 | Hitachi Chemical Company, Ltd. | Battery-state monitoring system |
JPWO2014076839A1 (en) * | 2012-11-19 | 2017-01-05 | 日立化成株式会社 | Storage battery voltage leveling device and storage battery state monitoring system |
-
2017
- 2017-11-01 GB GB1718096.9A patent/GB2568461B/en active Active
-
2018
- 2018-03-15 WO PCT/GB2018/050669 patent/WO2019086827A1/en active Application Filing
- 2018-03-27 US US15/936,867 patent/US10468899B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6229285B1 (en) * | 1997-10-03 | 2001-05-08 | Georgia Tech Research Corporation | Detector for rapid charging and method |
US6424157B1 (en) * | 1998-07-20 | 2002-07-23 | Alliedsignal, Inc. | System and method for monitoring a vehicle battery |
US6653817B2 (en) * | 2001-06-26 | 2003-11-25 | General Motors Corporation | State-of-charge detection device for a battery |
US20060091863A1 (en) * | 2004-04-06 | 2006-05-04 | Cobasys, Llc | Battery state of charge voltage hysteresis estimator |
US20070216367A1 (en) * | 2006-03-14 | 2007-09-20 | National University Of Ireland, Galway | Method and device for determining characteristics of an unknown battery |
US20140247004A1 (en) * | 2013-03-01 | 2014-09-04 | Nokia Corporation | Method, apparatus, and computer program product for foreign object detection parameter and charging data communication with wireless charging capable battery pack |
Also Published As
Publication number | Publication date |
---|---|
WO2019086827A1 (en) | 2019-05-09 |
GB2568461A (en) | 2019-05-22 |
US20190131796A1 (en) | 2019-05-02 |
GB2568461B (en) | 2020-04-22 |
GB201718096D0 (en) | 2017-12-13 |
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